unless you have all the pipes and a dyno you will never know which is best, but i like the DG its got a wicked bottom end and pulls hard all the way through. id run it on mine if i didnt have the GYT-R
Way back in the warrior haydays, the eSeries was dyno'd with all the other pipes on the market at that time and it came out on top, so I've stuck with that in claiming its the best.
I've got an old steel DG RCM exhaust and I hate it. I don't know if it gives any more power than the stock muffler but I do know that it's a heck of a lot louder than it.
I've got the White Brothers E2 and love it. easy to tune, and you can make it loud or fairly quiet if you want to. Also running the FMF PowerBomb header the two make a great combination.
I have a wb e series on my warrior and i like it,.makes good power and has a huge mid pipe. only the i dont like is the tone, its not a clean tone, kinda rough and muffled almost
I'm running an Oval GYT-R pipe. With the race core this thing sounds crisp and awesome. I changed to a quiet core, which is over priced at $70, still sounds good just not as good.
Good breathing properties.
I have a riva racing edition fmf. From what I've heard from Fmf it's a pretty rare exhaust. I love it and will prob run it til it falls apart. Just started buffing it last night.